E-commerce Medium 4,000/mo

Marketplace Profit Calculator

Know your real profit on every SKU after marketplace fees, shipping, COGS, returns, and ad spend. Stop guessing whether you're actually making money on Amazon, eBay, and Walmart.

FinanceAnalytics
MRR Potential
$8K–$30K
Time to MVP
6–8 weeks
Search Volume
4,000/mo
Market Size
$1.2B

The Problem

Amazon sellers report that 30% of their SKUs are unprofitable but they don't know which ones. Marketplace fee structures are complex — FBA fees alone have 6 components. Most sellers calculate profit per order but miss returns, ad spend, and storage fees. Spreadsheet-based tracking breaks above 100 SKUs.

The Solution

Profitability analytics platform that connects to your marketplace accounts, automatically factors in ALL costs including fees, shipping, COGS, returns, and advertising, and shows true profit per SKU — so you can double down on winners and kill losers.

Target Audience

Amazon and multi-marketplace sellers who can't tell which products are profitable, e-commerce operators managing 100–5,000 SKUs across channels, and brands evaluating whether to expand to new marketplaces

Key Features

1
True profit per SKU after all fees, COGS, shipping, returns, and ad spend
2
Marketplace fee calculator for Amazon FBA, FBM, eBay, and Walmart
3
Product-level P&L statements with margin and ROI calculations
4
Profitability alerts when SKU margins drop below your threshold
5
Scenario modeling for price changes, COGS adjustments, and channel expansion
6
Export to accounting software with categorized revenue and expense data

Market Opportunity

Market Size
$1.2B — E-commerce analytics and profitability tools market
Monthly Searches
4,000/mo
MRR Potential
$8K–$30K
Why Now?

Marketplace fees keep rising — Amazon FBA fees increased 5% in 2024. Multi-channel selling is standard, making cost tracking complex. Margins are shrinking as competition increases. Data-driven product decisions separate profitable sellers from struggling ones.

Revenue Model

$19/mo (up to 100 SKUs, 1 marketplace), $49/mo (up to 500 SKUs, 3 marketplaces), $99/mo (up to 2,000 SKUs + alerts + scenarios), $199/mo (unlimited + API + accounting export). Annual: 20% discount.

Competitive Landscape

Sellerboard

Amazon profit analytics. $19+/mo, Amazon-only, limited multi-channel support

Jungle Scout

Amazon seller suite with basic profitability. $49+/mo, product research focused not profit-focused

Helium 10

Amazon tools suite. $29+/mo, has profitability tracker but it's one feature among many

Spreadsheets

Free but miss dynamic fees, impossible to maintain across 100+ SKUs, no real-time data

Recommended Tech Stack

Next.jsNode.jsPostgreSQLAmazon SP-APIeBay APIWalmart APIStripeRedis

Ready to Build This SaaS?

Turn "Marketplace Profit Calculator" into a detailed SaaS blueprint with AI-generated architecture, pricing strategy, go-to-market plan, and development roadmap.

Browse More Ideas

Related SaaS Ideas

Product Return Analytics

Analyze why customers return products, identify patterns by SKU, category, and reason, and get actio...

AnalyticsReturns
View Details

AI Product Description Writer

Generate SEO-optimized, conversion-focused product descriptions from bullet points, images, or compe...

AIContent
View Details

Inventory Forecasting Engine

Predict exactly how much stock to order and when using AI. Analyze sales velocity, seasonal trends, ...

AIInventory
View Details